Push type exhaust cover

ABSTRACT

A push type exhaust cover, includes: a first cover body, configured with at least one through hole; and a second cover body, one side thereof in combination with one side of the through hole, a curved line configured between the second cover body and the through hole, a periphery of the second cover body in combination with a periphery of the through hole with a dotted broken line, an engagement portion projected from a top surface of the second cover body, pressing the engagement portion down causing the dotted broken line of the second cover body to be broken to fall into the through hole, allowing a top end of the engagement portion to press against another side of the through hole to make the through hole to be in communication with the outside so as to achieve an exhaust effect.

(a) TECHNICAL FIELD OF THE INVENTION

The present invention relates to a cover, and more particularly to a cover used in a disposable microwave lunch box and having an exhaust function.

(b) DESCRIPTION OF THE PRIOR ART

The current market-available microwave lunch boxes are disposable lunch boxes made of plastics mainly including polypropylene (PP) and polystyrene (PS); the both are non-toxic, tasteless and odorless. PP is soft and generally used in −6 to +120 degrees Celsius such that it is especially suitable for hot food and capable of being heated in a microwave over.

Referring to FIG. 5, a U-shaped through hole 31 for ventilation in communication with the outside is directly configured on a conventional microwave box cover 30. However, such kind of ventilation way is in a direct communication with the outside such that it is difficult to prevent dust or mosquitoes from entering therein, and the outside thereof needs to be further covered with a packing material so as to seal it completely. But, the packing material must be taken down before microwave cooking, which is inconvenient in use and not environmentally friendly.

SUMMARY OF THE INVENTION

To overcome the above defects, the present invention proposes a push type exhaust cover, including: a first cover body, configured with at least one through hole; and a second cover body, one side thereof in combination with one side of the through hole, a curved line configured between the second cover body and the through hole, a periphery of the second cover body in combination with a periphery of the through hole with a dotted broken line, an engagement portion projected from a top surface of the second cover body, pressing the engagement portion down causing the dotted broken line of the second cover body to be broken to fall into the through hole, allowing a top end of the engagement portion to press against another side of the through hole to make the through hole to be in communication with the outside so as to achieve an exhaust effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a perspective view of the present invention in a use state;

FIG. 4 is a cross-sectional view of FIG. 3; and

FIG. 5 shows a conventional microwave box cover.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1 and 2, a push type exhaust cover 1 of the present invention includes a first cover body 10 and second cover body 20.

The first cover body 10 is configured with at least one through hole 11. In the embodiment, the through hole 11 is configured on a groove 12, but the present invention is not so limited.

One side of the second cover body 20 is in combination with one side of the through hole 11, and a curved line 21 is configured between the second cover body 20 and through hole 11, where the periphery of the second cover body 20 is in combination with the periphery of the through hole 11 with a dotted broken line 22, and an engagement portion 23 is projected from the top surface of the second cover body 20 so that the second cover body 20 can seal the through hole 11, preventing mosquitoes, dust from entering therein.

The width of the second cover body 20 is larger than the one of the engagement portion 23, and the height of the engagement portion 23 is larger than the width of the through hole 11.

Referring to FIGS. 1 to 4, the dotted broken line 22 of the second cover body 20 is caused to break to fall in the through hole 11 by pressing down the engagement portion 23. The top of the rear end surface of the engagement portion 23 is configured with an arc section 231, and the arc section 231 in contact with and pressing the periphery of the through hole allows the engagement portion 23 to be passed through the through hole 11, and the top end of the engagement portion 23 to be pressed against another side of the through hole 11 to make the through hole 11 be in communication with the outside so as to achieve an exhaust effect. 

I claim:
 1. A push type exhaust cover, comprising: a first cover body, configured with at least one through hole; and a second cover body, one side thereof in combination with one side of said through hole, a curved line configured between said second cover body and said through hole, a periphery of said second cover body in combination with a periphery of said through hole with a dotted broken line, an engagement portion projected from a top surface of said second cover body, pressing said engagement portion down causing said dotted broken line of said second cover body to be broken to fall into said through hole, allowing a top end of said engagement portion to press against another side of said through hole to make said through hole to be in communication with the outside so as to achieve an exhaust effect.
 2. The cover according to claim 1, wherein the width of said second cover body is larger than the one of said engagement portion.
 3. The cover according to claim 2, wherein the height of said engagement portion is larger than the width of said through hole.
 4. The cover according to claim 3, wherein a top portion of a rear end of said engagement portion is configured with an arc section; said arc section in contact with and pressing a periphery of said through hole allows said engagement portion to be passed through said through hole.
 5. The cover according to claim 1, wherein a groove is configured on said first cover body, said through hole is configured on said groove, and the width of said second cover body is larger than the one of said engagement portion.
 6. The cover according to claim 5, wherein the height of said engagement portion is larger than the width of said through hole.
 7. The cover according to claim 6, wherein a top portion of a rear end surface of said engagement portion is configured with an arc section; said arc second in contact with and pressing a periphery of said through hole allows said engagement portion to be passed through said through hole. 